| /* |
| * Copyright (c) 2019 The Linux Foundation. All rights reserved. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /** |
| * DOC: qal_vbus_dev |
| * QCA abstraction layer (QAL) virtual bus management APIs |
| */ |
| |
| #if !defined(__I_QAL_VBUS_DEV_H) |
| #define __I_QAL_VBUS_DEV_H |
| |
| /* Include Files */ |
| #include <qdf_types.h> |
| #include "qdf_util.h" |
| #include "qdf_module.h" |
| #include <linux/of_gpio.h> |
| #include <linux/clk.h> |
| #include <linux/platform_device.h> |
| #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0) |
| #include <linux/reset.h> |
| #endif |
| |
| struct qdf_vbus_resource; |
| struct qdf_vbus_rstctl; |
| struct qdf_dev_clk; |
| struct qdf_pfm_hndl; |
| struct qdf_pfm_drv; |
| |
| /** |
| * __qal_vbus_get_iorsc() - acquire io resource |
| * @devnum: Device Number |
| * @flag: Property bitmap for the io resource |
| * @devname: Device name string |
| * |
| * This function will allocate the io resource for a device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_get_iorsc(int devnum, uint32_t flag, char *devname) |
| { |
| int ret; |
| |
| ret = gpio_request_one(devnum, flag, devname); |
| |
| return qdf_status_from_os_return(ret); |
| } |
| |
| /** |
| * __qal_vbus_release_iorsc() - release io resource |
| * @devnum: Device Number |
| * |
| * This function will release the io resource attached to a device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_release_iorsc(int devnum) |
| { |
| gpio_free(devnum); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_enable_devclk() - enable device clock |
| * @clk: Device clock |
| * |
| * This function will enable the clock for a device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_enable_devclk(struct qdf_dev_clk *clk) |
| { |
| int ret; |
| |
| ret = clk_prepare_enable((struct clk *)clk); |
| |
| return qdf_status_from_os_return(ret); |
| } |
| |
| /** |
| * __qal_vbus_disable_devclk() - disable device clock |
| * @clk: Device clock |
| * |
| * This function will disable the clock for a device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_disable_devclk(struct qdf_dev_clk *clk) |
| { |
| clk_disable_unprepare((struct clk *)clk); |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_get_dev_rstctl() - get device reset control |
| * @pfhndl: Device handle |
| * @state: Device state information |
| * @rstctl: Device reset control handle |
| * |
| * This function will acquire the control to reset the device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_get_dev_rstctl(struct qdf_pfm_hndl *pfhndl, const char *state, |
| struct qdf_vbus_rstctl **rstctl) |
| { |
| struct reset_control *rsctl; |
| #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0) |
| rsctl = reset_control_get_optional((struct device *)pfhndl, state); |
| #else |
| rsctl = NULL; |
| #endif |
| *rstctl = (struct qdf_vbus_rstctl *)rsctl; |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_release_dev_rstctl() - release device reset control |
| * @pfhndl: Device handle |
| * @rstctl: Device reset control handle |
| * |
| * This function will release the control to reset the device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_release_dev_rstctl(struct qdf_pfm_hndl *pfhndl, |
| struct qdf_vbus_rstctl *rstctl) |
| { |
| reset_control_put((struct reset_control *)rstctl); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_activate_dev_rstctl() - activate device reset control |
| * @pfhndl: Device handle |
| * @rstctl: Device reset control handle |
| * |
| * This function will activate the reset control for the device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_activate_dev_rstctl(struct qdf_pfm_hndl *pfhndl, |
| struct qdf_vbus_rstctl *rstctl) |
| { |
| reset_control_assert((struct reset_control *)rstctl); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_deactivate_dev_rstctl() - deactivate device reset control |
| * @pfhndl: Device handle |
| * @rstctl: Device reset control handle |
| * |
| * This function will deactivate the reset control for the device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_deactivate_dev_rstctl(struct qdf_pfm_hndl *pfhndl, |
| struct qdf_vbus_rstctl *rstctl) |
| { |
| reset_control_deassert((struct reset_control *)rstctl); |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_get_resource() - get resource |
| * @pfhndl: Device handle |
| * @rsc: Resource handle |
| * @restype: Resource type |
| * @residx: Resource index |
| * |
| * This function will acquire a particular resource and attach it to the device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_get_resource(struct qdf_pfm_hndl *pfhndl, |
| struct qdf_vbus_resource **rsc, uint32_t restype, |
| uint32_t residx) |
| { |
| struct resource *rsrc; |
| |
| rsrc = platform_get_resource((struct platform_device *)pfhndl, |
| restype, residx); |
| *rsc = (struct qdf_vbus_resource *)rsrc; |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_get_irq() - get irq |
| * @pfhndl: Device handle |
| * @str: Device identifier |
| * @irq: irq number |
| * |
| * This function will acquire an irq for the device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_get_irq(struct qdf_pfm_hndl *pfhndl, const char *str, int *irq) |
| { |
| *irq = platform_get_irq_byname((struct platform_device *)pfhndl, str); |
| |
| if (*irq < 0) |
| return QDF_STATUS_E_FAULT; |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * __qal_vbus_register_driver() - register driver |
| * @pfdev: Device handle |
| * |
| * This function will initialize a device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_register_driver(struct qdf_pfm_drv *pfdev) |
| { |
| int ret; |
| |
| ret = platform_driver_register((struct platform_driver *)pfdev); |
| |
| return qdf_status_from_os_return(ret); |
| } |
| |
| /** |
| * __qal_vbus_deregister_driver() - deregister driver |
| * @pfdev: Device handle |
| * |
| * This function will deregister the driver for a device |
| * |
| * Return: QDF_STATUS_SUCCESS on success |
| */ |
| static inline QDF_STATUS |
| __qal_vbus_deregister_driver(struct qdf_pfm_drv *pfdev) |
| { |
| platform_driver_unregister((struct platform_driver *)pfdev); |
| |
| return QDF_STATUS_SUCCESS; |
| } |
| #endif /* __I_QAL_VBUS_DEV_H */ |